Why does my pour-over take too long?

A slow drawdown time in pour-over brewing is one of the most common frustrations for home baristas. When water takes too long to pass through the coffee bed, it is almost always a result of the grind size being too fine. As the particles become smaller, they pack more tightly together, creating a dense barrier that restricts the flow of water. This increases the contact time between the water and the grounds, often resulting in an over-extracted, bitter, or astringent cup.

Beyond grind size, other factors can contribute to a sluggish brew. If you are using a paper filter, the quality and thickness of the paper can significantly impact flow. Some filters are designed to be slower, while others are more porous. Additionally, the presence of 'fines'—the microscopic dust particles created during grinding—can clog the filter pores. If your grinder produces a high amount of these fines, they will settle at the bottom of the filter and stall the drawdown, regardless of your primary grind setting.

Water quality and temperature also play a role in how the coffee bed behaves. Water with high mineral content can sometimes interact with the coffee particles in ways that affect extraction speed, though this is secondary to grind size. Furthermore, if you are pouring too aggressively or using a technique that agitates the grounds excessively, you may be forcing those fine particles into the filter, effectively sealing it.

In practice, troubleshooting your pour-over should be a systematic process. Start by adjusting your grind size one or two clicks coarser. If the drawdown time improves but the flavor becomes sour or weak, you have gone too far. Aim for a consistent flow that finishes within your target time range—typically 2:30 to 3:30 minutes for a standard pour-over. By isolating the grind size as your primary variable, you can regain control over your extraction and achieve the clarity and sweetness you desire.